In a paper published in the Monthly Notices of the Royal Astronomical Society, researchers
“The clusters of galaxies we have studied are somassive, which bend the light rays passing through their center, just as predicted by Einstein in 1915. And this, in turn, creates a kind of magnifying glass effect: images of background galaxies are magnified, ”explains Adelaide Claysens, Department of Astronomy at Stockholm University, one of the lead authors of the study.
The James Webb Space Telescope imaged a cluster of galaxies (SMACS0723)
Magnifying glass effect withThe resolution of the James Webb Space Telescope allowed researchers to detect stellar clumps, very compact galactic structures. These observations gave researchers the opportunity to study the relationship between cluster formation and evolution, as well as the growth of galaxies several million years after the Big Bang. Previously, this was not possible.
"Images from the James Space TelescopeWebb show that we can now detect very small structures inside very distant galaxies and that we can see these clusters in many of these galaxies. The telescope is a game changer in the entire field of research and helps us understand how galaxies form and evolve,” says Angela Adamo of the Oskar Klein Center at Stockholm University, one of the lead authors of the study.
The oldest galaxy studied in the article is so far away that we can see what it looked like 13 billion years ago, when the universe was only 680 million years old.
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